The Herman Miller Aeron chair is one of your favorite office chairs, but it's no doubt they're expensive. If you can snag a used one for cheap—even if its broken—weblog Apartment Therapy has a full guide for refurbishing it yourself.

You don't need much to refurbish an Aeron, just a few allen wrenches and a wrench. Once you disassemble the chair, you can track down replacement parts cheaply from companies like Office Designs, and then easily refurbish it yourself. One of the great things about the Aeron (and partially why it's so expensive) is that everything is user-serviceable, so it's not nearly as complicated as you think. Head over to Apartment Therapy for the full guide.